Huh? Where are you guys getting that they dont work? Unless Im wrong they do what they say they do and reduce healing "magic" by 20% Even if its just heals cast by healers, that's hardly useless. But if Im wrong about that please let me know so I can stop wasting gcd's on miasma 2.

In pve I think it did make garuda die a little faster, cant really confirm that tho. Like most forms of CC it got pushed into irrelevency later on in ARR and HW.